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The "hammerhead", or giant cantilever, crane is a fixed-jib crane consisting of a steel-braced tower on which revolves a large, horizontal, double cantilever; the forward part of this cantilever or jib carries the lifting trolley, the jib is extended backwards in order to form a support for the machinery and counter-balancing weight. In addition to the motions of lifting and revolving, there is provided a so-called "racking" motion, by which the lifting trolley, with the load suspended, can be moved in and out along the jib without altering the level of the load. Such horizontal movement of the load is a marked feature of later crane design. These cranes are generally constructed in large sizes, up to 350 tons.

Hammerhead Crane

The "hammerhead", or giant cantilever, crane is a fixed-jib crane consisting of a steel-braced tower…

"Scopus umbretta, the Hammerhead, of Madagascar and a large part of the Ethiopian Range, is purplish-brown, with black tail-bars, wider towards the tip; the head exhibits a thick erectile crest, generally carried horizontally; the bill is black and the feet are brownish." A. H. Evans, 1900

Hammerhead Standing Near Water

"Scopus umbretta, the Hammerhead, of Madagascar and a large part of the Ethiopian Range, is purplish-brown,…

"Having a body like other sharks, but with a double snout like a double-headed hammer, and having an eye in the middle of each extremity; it is very voracious, and from twelve to twenty feet long." — Goodrich, 1859

Hammerhead Shark

"Having a body like other sharks, but with a double snout like a double-headed hammer, and having an…

The eight species of hammerhead range from 2-6m long, and all species have projections on both sides of the head that give it a resemblance to a flattened hammer.

Hammerhead Shark

The eight species of hammerhead range from 2-6m long, and all species have projections on both sides…